Bath, England, is a UNESCO World Heritage city known for its stunning Georgian architecture, Roman Baths, and rich history. Here are some key attractions and activities to consider during your visit to Bath:

1. Roman Baths and Pump Room: Explore the well-preserved ancient Roman Baths, including the Sacred Spring, Roman Temple, and Bath House. The adjacent Pump Room offers a taste of Georgian high society with its elegant setting for refreshments.
2. Bath Abbey: Visit the beautiful Bath Abbey, an impressive medieval church with stunning architecture and a rich history.
3. The Royal Crescent and The Circus: Take a stroll through these iconic examples of Georgian architecture. The Royal Crescent is a semicircular terrace of grand Georgian houses, while The Circus is a circular space surrounded by townhouses.
4. Thermae Bath Spa: Enjoy a relaxing spa experience at the Thermae Bath Spa, where you can bathe in the thermal waters that have attracted visitors for centuries.
5. Pulteney Bridge: Admire one of the most picturesque bridges in the world, spanning the River Avon and lined with shops on both sides.
6. Victoria Art Gallery and The Holburne Museum: Art enthusiasts can explore these institutions, which showcase a diverse range of artworks.

Now, regarding castles near Bath, there aren’t any castles directly in Bath, but there are several historic castles within a reasonable driving distance:

1. Wells Castle: The city of Wells, located about 20 miles from Bath, is home to the stunning Wells Cathedral and the Bishop’s Palace, which includes a medieval palace and gardens.
2. Farleigh Hungerford Castle: Approximately 10 miles from Bath, this medieval castle is known for its well-preserved chapel and interesting history.
3. Nunney Castle: A picturesque castle located around 15 miles from Bath, known for its moat and impressive architecture.
4. Stanton Drew Stone Circles: While not a castle, these ancient stone circles are about 8 miles from Bath and offer a unique historical experience.

Make sure to check the opening hours and any travel restrictions before planning your visit, and enjoy your time exploring the rich heritage of Bath and its surroundings!